Insulated crossover for electric railways.



No. 842,781. PATENTED JAN. 29, 1907. E. E. GILMORE.

INSULATED GROSSOVER FOR ELECTRIC RAILWAYS.

APPLICATION FILED snmzv, 1905.

witnesses UNITED STATES PATENT onnron.

INSUL ATED GROSSOVER, FOR ELECTRIC RAILWAYS.

Specification of Letters Patent.

Patented Jan. '29, 1 907.

Application filed September 27, 1905. Serial No. 280,318.

To wit whom it nay concern): 1

Be it known that I, EDWARD E. GILMORE, a citizenof the United States,- residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and usefullmprovements in Insulated Crossovers for Electric Railways, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates toinsulated crossovers for electric trolley systems; and the object of the invention is to so construct the cross-arms that the wires of two separate sections ortwo distinct lines may pass each other without communicating one to the other relatively diflerent pressures of current.-

Afurther object of the invention is the provision of an insulated crossover which is adapted to be adjusted from a right-angle to an acute-angle crossover.

Heretofore most of theinsulated crossovers have been constructed with their respective arms relatively rigid, and two different styles have had to be provided for acute and right angle crossings. With my invention such necessityis entirely obviated and a crossover provided which can be adjusted to almost any an le. I

Furt er objects of the invention will make themselves evident upon reading the following specifications in connection with the accompanying drawings, which form a part of thisapplication, and in which Figure 1 is a side elevation of the device shown, partly in section, to better illustrate the connection with the cross-arms. Fig. 2 is a bottom plan view, and Fig. 3 is a top plan view, of the device. 1

Referring to the drawings, 1 represents a cross-arm provided with a wire-holding groove 2, which groove defines inclined flanges 3, cutaway at each side of the center to form shoulders-4. Between these shoulders is a flat connecting portion 5, slightly raised above the'bottom of the groove 2 and pro-,

vided with a central guiding-stud 6 on its underside, adapted to guide the trolley-wheel from one side of the arm to the other. I

7- represents a cross-arm similar with respect to the grooves 2, the flanges 3, and the shoulders, 4, but different from the first crossarm in that it is provided with'a centrallybowed portion 8, rising above the flat connecting portion 5. Secured to the connect ing portion by bolts 9 is a strong fiber disk 10, adapted to receive bearing in an aperture formed by tongues 11, extending toward the center from each side of the arm 7 and located 10 is divided and its halves somewhat separated at the divisional line, so as to form a groove 12, which carries the wire across the connecting member 5.

A groove or trough 13 forms a continuation of the groove 2 in the arm 7 over the bowed portion between a .pair of flanges, upon which rests an insulating-disk 14, of hard fiber or other suitable substance, which lie strip 15, which passes across the disk and has its ends 16 depressed within the groove 2 and held therein by pins 17 Each arm 1 and 7 is provided with apertured lugs 18, adapted to receive strain-wires for alining the device, and at each end of the groove end runner 19, having a groove 20 communicating with the groove 2 of the cross-arm and provided with a lower flange defining the groove 20 and adapted to clamp upon the wire and hold it in position. Further description of this end-groove runner is thought to be unnec'essary,'as the subject matter has been claimed in anothera lica- For the sake of clearness I have shown the pass across the respective cross-arms.

In assembling my device each side-groove runner or shoe is placed on the trolley-wire for the purpose and when in place is made ing it by the cotter pin or spring 26. This brings the trolley-wire down to the bottom of the groove and gives a smooth straight underrun f or the wheel.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a device of the class described the combination with a cross-arm having a trolley-wire, of another cross-arm rovided with a central connecting portion a a ted .to

formed on the first-mentioned cross-arm underneath the central bowed portion, an insulating-disk secured to the second-mentioned respective cross-arms there is pivoted a side tion filed of even date herewith, Sena No trolley-wires 21 in dotted lines where they and slid in place by the aid of a wrench made bowed central portion adapted to carry a carry a second trolley-wire, a bearing e ement 6o below the bowed portion 8. it This fiber disk is held in place upon said flanges by a metalfast by placing pin 25 in opening 27 secur- IIO cross-arm adapted to engage the bearing ele ment engaging said openings and With a ment on the first mentionedarm, whereby groove formed by its division for the recepadjustment of the cross-arms may be had, tion of a trolley-wire, means for bracing each and an insulating-disk secured to the first arm in its adjusted position, and means for cross-arm adapted to brace each cross-arm in I insuring a straight run from one end of each any position to which it is adjusted. arm to the other.

2. In a device ofthe class described, the g r In testimony whereof I aifix my signature combination with a pair of crossed arms havin presence of two Witnesses. ing Wire-holding grooves, one of said arms EDWARD E. GILMORE. having a centralbowed portion and with openings forming bearing elements, the other 0' said arms having a divided bearing ele- Witnesses JAMES HEYWoon, DAVID M. AsnLEY. 

